314 Rydberg: Studies on the Rocky Mountain flora 



PORTULACACEAE 



Limnia utahensis sp. nov. 



Annual; stem 2-15 cm. long; basal leaves petioled; blades 

 spatulate to linear, 1-3 cm. long, 2-6 mm. wide; stem leaves 

 connate, forming an oblique, 2-lobed disk, 1-2 cm. broad; inflo- 

 rescence very short, corymbiform; fruiting sepals ovate, acute, 

 2-3 mm. long, about equalling the pedicels; seeds about 1.5 mm. 

 in diameter, minutely muricate. 



This species resembles in habit L. depressa (A. Gray) Rydb. 

 and L. spathulata (Dougl.) Heller but differs from the former in the 

 long and narrow blades of the basal leaves and more connate 

 stem leaves, from the latter in the large and broad stem leaves, 

 and from both in the large seeds. 



Utah: St. George, 1877, Palmer 56 (type, in herb. Columbia 

 University); 1874, C. C. Parry 23 and 24. 



I have not seen the type of Montia Viae A. Nels.,* but from the 

 description and specimens named by Professor Nelson I judge it 

 is the same as Limnia depressa (Robinson) Rydb.f published a 

 few months earlier. 



Coulter and Nelson report Calyptridium roseum S. Wats, from 

 western Wyoming, but I think this must be a mistake. 



Professor A. O. Garrett and myself collected Talinum brachy- 

 podum S. Wats, in southeastern Utah. Miss A. Eastwood has 

 reported it from the same region. 



ALSINACEAE 



Cerastium thermale sp. nov. 



Cerastium arvense fuegianum Hollick & Britton, Bull. Torrey Club 



14: 50. 1887. Not Hook. 1854. 

 Cerastium fuegianum A. Nels.; Coult. & Nels. New Man. Bot. 

 Rocky Mts. 184. 1899. 



Densely cespitose perennial; stems decumbent at the base, 

 5-10 cm. long, viscid-puberulent; leaves yellowish green, less than 

 1 cm. long, lanceolate, acute, or the lower oblong or spatulate and 

 often obtuse, coriaceous, with a very thick midrib, finely viscid- 

 puberulent; cymes 1-7-flowered, usually condensed and with short 

 pedicels; sepals 4 mm. long, glandular-puberulent, ovate, scarious- 



* Bot. Gaz. 42: 48. 1906. 



t Bull. Torrey Club 33: 139. 1906. 



